Q: What can I do if my journal editor has not yet read my submission email?

Although most journals have a dedicated journal submission system, some journals continue to use email for managing submissions, and your target journal might be among the latter. Since journal editors receive a lot of submissions, it is difficult to keep track of the constant inflow of emails from authors who may be at different stages of publication. It appears as though you requested a notification when the editor read your email and you haven't received the notification yet. There is a possibility that your email has not yet been read by the editor or it has been delivered to the Junk or Spam folder. There are two things you can do.

Check the journal website for any information about their response time after first submission. It is likely that the journal generally takes longer to get back to all authors. If you find no information, wait for another day or two and then write another email following up about the status of your submission. Say that you're just writing to check that the submission has been received because you did not receive an acknowledgement. Forward the previous email you sent so that the journal editor can see your earlier communication. Make sure you write a clear subject line, for example, Re: The submission of my paper titled "the title of your paper" on <mention the date>  It might also be a good idea to check whether the journal has an online system as well. If yes, why don't you submit your paper via the online system? While doing so, be sure to mention that you are submitting your paper via the online system because you have already sent it via email (mention the date of your email) and received no response/acknowledgement from the journal.